According to Jean Piaget's theory of cognitive development, the ability for 'abstract thinking' develops in which stage?

→ Which of the following psychological statements is most authentic and scientifically valid regarding the real psychological implications of 'Decentration'—a central concept under Jean Piaget's Theory of Cognitive Development defined as the advanced cognitive ability where a child can simultaneously consider, understand, and coordinate multiple aspects or dimensions of an object or situation rather than focusing on only one aspect, dimension, or feature (Centration)—and its scientific operation for students' multi-dimensional perspective, logical conservation, and cognitive flexibility in classroom teaching? → Under Jean Piaget's theory of cognitive development, when analyzing the capabilities of 'Hypothetico-Deductive Reasoning' and 'Combinatorial Thought' that develop in adolescents entering the 'Formal Operational Stage', which of the following statements most accurately defines the ontological and cognitive characteristics of this stage? → According to Piaget, in which stage of cognitive development does a child understand the concept of 'conservation'? → According to Jean Piaget's theory of cognitive development, what is the age range of the 'formal operational stage'? → According to Jean Piaget's theory of cognitive development, 'abstract thinking' is a characteristic of which stage? → According to Jean Piaget's theory of cognitive development, the 'formal operational stage' (abstract thinking) is related to which of the following age groups? → Consider the following statements in the context of Jean Piaget's theory of cognitive development and Lawrence Kohlberg's theory of moral development: 1. According to Jean Piaget, cognitive development is a continuous and progressive process that moves through stages, and in the Concrete Operational Stage, the child acquires the ability of 'conservation' and 'decentration'. 2. In the Formal Operational Stage of Piaget's theory, the capacity for 'hypothetico-deductive reasoning' and abstract thinking is fully developed during adolescence. 3. Under the 'Post-conventional Morality' level of Lawrence Kohlberg's theory of moral development, the social contract and individual rights stage involves viewing laws as malleable and logical for societal welfare. 4. According to Kohlberg, all stages of moral development occur in a universal and invariant sequence, and an individual progresses in the same direction without skipping any stage, although cultural and environmental factors can influence the rate. Which of the above statements are correct? → According to Lev Vygotsky's socio-cultural theory of development, when conducting a nuanced analysis of the role of 'private speech' in children's cognitive development, which of the following statements provides the most accurate and scientific explanation of this concept?